Question #1: Two missiles speed directly toward each other, one at 9,000 mph and the other at 21,000 mph. If they start 1,317 miles apart, how far apart are they on minute before they collide? (scroll down for answers)

Answers#1: Find the closing rate: 9000+21000 = 30,000 mph Change to miles per minute: 30,000/60 = 500 miles per minute--------------------------------------How far apart are they one minute before they collide?Answer: 500 miles